Always getting invalid signature in jwt.io

问题

I always get invalid signature when I input the generated token in jwt.io Here is my code for making the token

const secret = 'secret';
const token = jwt.sign({
    username: user.username,
    userID: user._id
  },
  secret, {
    expiresIn: "1hr"
  }
);

What did I do wrong?

I'm using the jsonwebtoken package. https://github.com/auth0/node-jsonwebtoken

回答1:

If you are using jsonwebtoken lib, I tried and able to create the token and verify as well. Please have a look at the code and let me know in comments if you are still facing the issue.

var jwt = require('jsonwebtoken')

const secret = 'secret';
const token = jwt.sign({
        username: "",
        userID: 1
    },
    secret, {
        expiresIn: "1hr"
    },
    function(err, token) {
        if (err) {
            console.log(err);
        } else {
            console.log(token);
        }
    });

Here is the link of jwt.io where I entered your secret used and it's saying verified.

https://jwt.io/#debugger-io?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VybmFtZSI6IiIsInVzZXJJRCI6MSwiaWF0IjoxNTI4NTUyMDYyLCJleHAiOjE1Mjg1NTU2NjJ9.raL79zTGONyXgr9vuXzAyMflHJ0JqPYTXsy9KwmlXhA

来源：https://stackoverflow.com/questions/50774780/always-getting-invalid-signature-in-jwt-io